I also have a CC, it was my first board and I still use it from time to time....I love it.

If money is no object, why not get the RC?

Mervin nerds can correct me on this, but I'm pretty sure while the CORE of the Skatebananna is different, the TNT base is the same as GNU's CB397898745XNiner (no idea what it's called, but it's a silly name) extruded base. SO the carbon credit, essentially, has the same base. I've also heard the skate bananna is a bit softer than the Carbon Credit, which is not super soft at all.

You are on the VERY light side of that board, weight wise. For reference I have an inch and 30lbs on you and I'd ride a 151.5 for playfulness. That being said, it will hold up for you at speed and steeper stuff...iono.